Sawmill.



N0. 742,848. PATENTED NUV. 3, 1903. E. D YER. SAWMILL. APPLICATION FILEDMAR. 10, 1903.

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No. 742,848. PATENTED NOV. 3, 1903, E.DYER.

SAWMILL.

APPLICATION mum MAR. 10. 1903.

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No. 742,848. PATENTED Nov. 3, 1903. E. DYER. F

SAWMILL.

APPLICATION mum MAR. 10, 1903. no MODEL. s SHEETS-SHEET a.

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UNITED STATES Patented November 3, 1903.

ELBERT DYER, OF BANDON, OREGON.

SAWMILL.

SPECIFICATION forming part of Letters Patent No. 742,848, dated November3, 1903.

Application filed March 10, 1903. Serial No. 147,114. (No model.)

To all whom it may concern.-

Be it known that I, ELBERT DYER, a citizen of the United States,residing at Bandon, Coos county, State of Oregon, have invented certainnew and useful Improvements in Sawmills; and I do hereby declarethefollowing to be a full, clear, and exact description of the same.

My invention relates to the class of sawmills.

The object of my invention is to provide a sawmill capable of cuttingsuccessive pieces horizontally throughout the depth of the log in givensuccessive sections of the same, whereby the whole log of whatever sizemay be conveniently and economically cut up with comparatively smallsaws; and to this end my invention consists in vertically-adj ustablesaws disposed and operating at right angles to eachother.

It also consists, in connection with said saws, of a third saw parallelto and adjustable to and from the vertical saw to define the width ofthe pieces out according to the material.

It also consists in the novel construction, arrangement, and combinationof parts,which I shall now fully describe by reference to theaccompanying drawings, in which Figure 1 is an elevation of the mill,taken from the saw side. Fig. 2 is an elevation taken from the head end.Fig. 3 is a plan of the mill.

A is a main stationary frame, to which is fitted and adapted to movevertically the supplementary or saw-carrying frame 13, Figs. 1 and 2.Upon frame B is mounted the vertical shaft or arbor c, Fig. 1, whichcarries the horizontally-disposed saw 0. Upon frame B is also mounted ahorizontal shaft or arbor d, which carries the vertically-disposed fixedsaw D and the vertically-disposed adjustable saw D, which is parallel tothe saw D. The saws C and D thus operate'in planes at right angles, andtheir relative disposition is such that the saw O cuts horizontally intothe side of the log, and the saw D cuts down into it from the top, theirperipheral planes being such as to enable them to cut out a sector orsegment from the log. It will be readily seen if the frame B, whichcarries the saws, be lowered only sufficient to permit saw D topenetrate the log to the depth of, say, an inch the horizontal saw 0will cuta sector having a maximum depth of an inch. Then if the frame belowered another inch for a second cut a piece or board an inch thickwill then be cut out, but wider than the previous piece, being nearerthe horizontal diameter of the log. Likewise a third cut will make aboard or piece wider still, and so on, until the plane of the horizontaldiameter of the log is passed, whereupon the boards will grow narrower.The saw D being adjustable to and from the saw D is intended to cut offsquare the edge of each piece or board and define its width, being setclose up toward saw D to begin with and successively withdrawn as theboards grow wider and caused to approach again as they grow narrower.The prime adjustments of the saws are therefore successive loweringsduring work on a log and a complete return when the depth of the log iscut in order to begin again on another part of the same log or on afresh log. These adjustments are eflected by the vertical movement ofthe frame B, which carries the saws and such parts of the mechanism asare afieoted by its movement. The vertical adjustment of the frame B maybe various. I have here shown the following constructions: The cornersof the frame B are provided with slides b, Fig. 1, movable upon thecorner-posts a of frame A. Mounted upon these corner-posts are longscrews a, Fig. 2, upon the lower ends of which are stops a to limit thedownward movement of nuts 1), se-

cured on the slides band engaging the hangerscrews a. The upper ends ofthese screws have miter-pinions a Fig. 3, which engage withmiter-pinions a on the ends of horizontal shafts 01?, mounted on top offrame A. At the head of frame A, on top, is a cross-shaft 0, the ends ofwhich have pinions a engaging with pinions a on the shafts a Upon thishead cross-shaft a is a sprocket a", from which a chain a Fig. 1,extends down to a sprocket a, Fig. 2, mounted on a shaft a carried byframe A below. Now it will be seen that if shaft 0. be turnedmovementwill be transmitted to thehanger-screws a, which by theirengagement with the nuts I),

will raise or lower the frame B.

In practice the downward feed of the frame B is best effected by hand,while its return is best done by power. Accordingly I have on shaft at aratchet ja Fig. 1, with which ongage the pawls a of a hand-lever a. Thisis the hand device. The power device will be best understood by leadingup to it through the general power-transmitting connections.

E is the shaft, Fig. 2, having pulley e, through which power is led intothe machine from suitable source. This shaft is mounted in frame A, andit carries asecond pulley e, from which a belt e extends to anidler-pulley e thence to a pulley d on the shaft or arbor d, whichcarries the saws D and D, whereby they are driven. Thence the belt 6extends upwardly to and over a tightenerpulley e, mounted in a slidingcarriage e in the top of frame A and held up to automatioally keep thetension on belt 6 by means of a weighted lever 6", whereby the frame Bmay move up and down and the belt e still be kept taut.

F (seen best in Fig. 3) is the belt which drives the arbor c of saw 0.This belt passes from a pulley d on the arbor d of saws D and D to apulley g, carried by frame B, but slidably mounted on a vertical countershaft Gat the head of frame A, Fig. 2. Thence the belt passes to apulley c on arbor c, thence to a tightener-pulleyf on frame B, saidpulley being carried in a weight-controlled sliding carriage f, andthence to pulley d and,

On top of frame A is a cross-shaft I, on which is a pulley 2', fromwhich a belt t" extends to a pulley g on the upper end of thecountershaft G, whereby rotation is imparted to shaft I. A secondcross-shaft J is mounted on top of frame A and is driven by a b'eltjfrom a pulley 2' on shaft I to a pulley j on shaft J. On shaft J are.pulleys j j from which belts j j extend down to drive thefriction-pinions h h. One of these belts is crossed, as shown in Fig. l,in order to drive the friction-gear H in opposite'directions to eitherraise or lower frame B by power.

On the end of the shaft h which carries the friction-gear H is a loosesprocket h, Fig. 3, from which a chain h extends to a sprocket a on theshaft a. A lever h operates a clutch h on a feather on shaft h to throwthe loose sprocket h" into and out of Then the lever h is moved to throwthe proper pinion it into gear with the large friction H, and finallythe lever h is operated to throw the clutch h to its engagement withsprocket h thereby connecting said sprocket with shaft 71. Motion isthus transmitted to shaft a, which through the devices heretoforedescribed in connection with the hand mechanism will lift frame B. Theframe B may also, if desired, be lowered by the same power mechanism.

As heretofore mentioned the saw D is adjustable to and from the saw D inorder to define the width of the boards. For this purpose its hub d ismounted on a feather, which hub has an arm 01 with a nut 01 with which afeed-screw d engages. (See Fig. 8.) This screw is operated by abevel-pinion d on its head end engaging a bevel-pinion d ona rod dextending to the head of the machine and there provided with ahand-wheel 03 In order to gage the feed of screw d and the consequentadjustment of saw D, I have at the head of the machine a scale d, overwhich moves a pointer d, actuated by a screw d, which is operated bybevel-pinions d and (1 from the rod 01 Figs. 2 and 3.

The operation of the sawmill is as follows: The log, which I havedesignated by L, must be supposed to be mounted upon a suitable carriageto which by proper mechanism the necessary travel is given, and suitablemeans will also be provided to shift said log as required. These form nopart of my invention, and I have not, therefore, described orillustrated them. The log being adjusted to position with relation tothe saws, the latter are then brought down by lowering frame B to such aposition as will give the thickness of board or piece determined upon.The first piece being thus cut out the saws are again lowered to therequired point and a second cut is made, and so on down through thethickness of the log. Meanwhile the saw D is adjusted away from ortoward saw D, as the width of the sawed-out piece requires. When thedept-h of the log is reached, the frame B is run up again to lift thesaws to their highest point, the log is shifted for a new position, andthe operation is repeated.

I am aware that it is not new to cut out from a log a sector or segmentby saws at right angles to each other; but as this is done to get from alarge log a smaller piece adapted to be sawed up the saws themselveshave been non-adjustable-that is, with no means to raise or to lowerthem to successively cut out pieces of given thickness; nor, as far as Iam aware, has a specially-adjustable second saw, such as D, beenemployed to define the width of the pieces according to the material.

Having thus described my inventi0n,what I claim as new, and desire tosecure by Letters Patent, is'

1. In a sawmill, the combination of apair of saws disposed and operatingin planes at right angles to each other, a third saw parallel with andadjustable toand from the vertical saw of the pair, and means forraising and lowering said saws.

2. In a sawmill, the combination of a pair of saws disposed andoperating in planes at right angles to each other, a third saw parallelwith and adjustable to and from the vertical saw of the pair, a framecarrying all of said saws and'means for raising and lowering the frame.

8. In asawmill, the combination of a main frame, a supplementary frame,screw-hangers supporting the latter frame in the main frame, nuts onthesupplementary frame engaging the screw-hangers, means for turning thescrew-hangers to raise and to lower the supplementary frame, a pair ofsaws carried by the supplementary frame and disposed and operating inplanes at right angles to each other, a third saw carried by saidsupplementary frame, said saw being parallel with and adjustable to andfrom the vertical member of the pair of saws, and means for adjustingsaid third saw consisting of the hand-wheel rod carried by thesupplementary frame, the feed-screw operated by said rod and the nut ofthe saw engaged by said screw.

4. In a sawmill, the combination of a main frame, a supplementary frame,screw-hangers supporting the latter frame in the main frame, nuts on thesupplementary frame ongaging the screw-hangers, means for turning thescrew-hangers to raise and to lower the supplementary frame, a pair ofsaws carried by the supplementary frame and disposed and operating inplanes at right angles to each other, a third saw carried by saidsupplementary frame, said saw being parallel with and adjustable to andfrom the vertical member of the pair of saws, means for adj usting saidthird saw consisting of the handwheel rod carried by the supplementaryframe, the feed-screw operated by said rod and the nut of the sawengaged by said screw, and the gage mechanism carried by said frame,comprising the scale, the pointer and the screw operated by said rod.

In witness whereof I have hereunto set my hand.

ELBERT DYER.

Witnesses:

WALTER F. VANE, D. B. RICHARDS.

